Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite

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dc.contributor.author Vamvuka, D en
dc.contributor.author Kakaras, E en
dc.contributor.author Kastanaki, E en
dc.contributor.author Grammelis, P en
dc.date.accessioned 2014-03-01T02:42:19Z
dc.date.available 2014-03-01T02:42:19Z
dc.date.issued 2003 en
dc.identifier.issn 0016-2361 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/30943
dc.subject Biomass en
dc.subject Devolatilisation en
dc.subject Kinetics en
dc.subject.classification Energy & Fuels en
dc.subject.classification Engineering, Chemical en
dc.subject.other Lignite en
dc.subject.other Pyrolysis en
dc.subject.other Reaction kinetics en
dc.subject.other Devolatilization en
dc.subject.other Biomass en
dc.title Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite en
heal.type conferenceItem en
heal.identifier.primary 10.1016/S0016-2361(03)00153-4 en
heal.identifier.secondary http://dx.doi.org/10.1016/S0016-2361(03)00153-4 en
heal.language English en
heal.publicationDate 2003 en
heal.abstract Biomass residues in the Mediterranean region come mainly from agricultural and agro-industrial activities and forest byproducts. The paper presents the results of kinetic parameters and main devolatilisation characteristics of three biomass materials, when these are used either alone or in conjunction with Greek lignite. Namely, olive kernel, forest and cotton residues were pyrolysed in a thermogravimetric analyser, under dynamic conditions. The effect of material particle size and heating rate was investigated both on the pyrolysis behavior and reaction kinetics, over the temperature range of 25-850 degreesC. Furthermore, experiments with blends of lignite and biomass were conducted under the same conditions at the lower heating rate. The biomass materials presented higher thermochemical reactivity than lignite. Their decomposition was successfully modeled by three first-order independent parallel reactions, describing the degradation of hemicellulose, cellulose and lignin. No significant influence of the particle size was detected, both on the devolatilisation characteristics and kinetics. The effect of the heating rate on the pyrolysis behavior was more pronounced for biomass materials rather than lignite. A comparison between slow and fast heating rate tests reveals a small displacement of the DTG profiles to higher temperatures. It was concluded that such 'solid biofuels' could support the combustion of poor coals, because of the faster and in much higher quantity release of volatile compounds. (C) 2003 Elsevier Ltd. All rights reserved. en
heal.publisher ELSEVIER SCI LTD en
heal.journalName Fuel en
dc.identifier.doi 10.1016/S0016-2361(03)00153-4 en
dc.identifier.isi ISI:000184858300016 en
dc.identifier.volume 82 en
dc.identifier.issue 15-17 en
dc.identifier.spage 1949 en
dc.identifier.epage 1960 en

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